The Fossil Flats trail is called the birthplace of Arkansas Mountain Biking in 1989. That is the loop that you start and end on. This ride also included Sawmill Loop, All You Can Eat, Racer's Hill, We Can Take, Sparky and Orville. Devil's Den State Park is about an hour south of Bentonville, Arkansas.
A cross-country trail with rock walls, creek crossings and views of the river below.
Slaughter Pen Trail System Highlights, Bentonville, Arkansas
The Slaughter Pen trail system has tons of fun trails in Bentonville, Arkansas. This video show about 10 of them including several from the Castle. If you're planning to ride in Bentonville, definite include this area.